Patents by Inventor Tom A. Bither, Jr.

Tom A. Bither, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for oxidation of N-butane to maleic anhydride
    Patent number: 4699985
    Abstract: An improved vanadium/phosphorus catalyst for the oxidation of n-butane to maleic anhydride is disclosed. Preferably, the catalyst contains a promoter. A process for the oxidation of n-butane to maleic anhydride using the improved catalyst is also disclosed.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: October 13, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Tom A. Bither, Jr.
  • Fumed silica modified catalyst
    Patent number: 4632916
    Abstract: An improved vanadium/phosphorus catalyst for the oxidation of n-butane to maleic anhydride is disclosed. Preferably, the catalyst contains a promoter. A process for the oxidation of n-butane to maleic anhydride using the improved catalyst is also disclosed.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: December 30, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Tom A. Bither, Jr.
  • Catalyst for vapor phase oxidation of n-butane to maleic anhydride
    Patent number: 4442226
    Abstract: Improved vanadium/phosphorus oxide catalyst for the vapor phase oxidation of n-butane to maleic anhydride, and the use of said catalyst to prepare maleic anhydride, said catalyst containing the nonpost-deposited promoter comprising silicon and at least one of indium, antimony and tantalum.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: April 10, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Tom A. Bither, Jr.
  • Vapor phase oxidation of n-butane to maleic anhydride
    Patent number: 4371702
    Abstract: Improved vanadium/phosphorus oxide catalyst for the vapor phase oxidation of n-butane to maleic anhydride, and the use of said catalyst to prepare maleic anhydride, said catalyst containing the nonpost-deposited promoter comprising silicon and at least one of indium, antimony and tantalum.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: February 1, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Tom A. Bither, Jr.
  • Preparation of furan
    Patent number: 4322358
    Abstract: Catalytic vapor phase process wherein the feed stream comprising, on a molar basis, the sum of which is 100%, 10-32% of at least one linear unsaturated C.sub.4 -hydrocarbon selected from 1-butene, 2-butene and 1,3-butadiene, 10-25% oxygen, 3-30% water and 13-77% inert diluent, is contacted with a modified bismuth molybdenum oxide catalyst at 350.degree.-600.degree. C. at a pressure of at least 1 atmosphere (about 100 kPa) for 0.1-10 seconds, said catalyst being selected from:(a) BiMo.sub.a M.sub.b Q.sub.c R.sub.d O.sub.x wherein M is at least one element selected from In, Ce, Cr, Fe and Cu, Q is at least one element selected from V, P, Sb and Te, R is Na or Ag, a is 0.7-60.0, b is 0.1-33.0, c is 0-7.0, d is 0-1.5 and x is such a number as is necessary to satisfy the valences of the elements, with the proviso that a/1+b.gtoreq.0.5 and a/1+b+c.gtoreq.0.19 and the proviso that c>0 when d>0; and(b) BiMo.sub.a As.sub.b Z.sub.c O.sub.x wherein Z is at least one element selected from Na and Ca, a is 1.3-2.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: March 30, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Tom A. Bither, Jr., William R. McClellan